I think to stop UDs a rule should be made that you need to place a vote right after nightfall. It can always be retracted but you need to name a new vote at the same time.
Could be interesting to see who votes who and might even help teams decide on who is what.
Of course there needs to be a time limit as not everyone is always around at night fall but I think most could check in and place a vote by say 7 AM the next morning.
Actually it won't stop UDs.
But if they don't vote then they UD we won't have to worry about votes sitting on people near night fall that end up as UDs. We'll have more time to switch to others.
Personally I think someone should be allowed to do what they want as far as strategy goes.. If it backfires so be it. At this point you guys can turn almost any situation into an evil tendency so why limit the play? I mean seriously... If Dawn hadn't broken her elbow I believe my own play last game would have done me in on my own. If that was the case so be it.. I deserved it..